code: def run(loop):
      try:
          loop.start()
      except KeyboardInterrupt:
          print("Keyboard interrupt")
  
imports: from __future__ import annotations
  import pytest
  from concurrent.futures import ThreadPoolExecutor
  from itertools import repeat
  from tornado.ioloop import IOLoop
  from bokeh.util.serialization import make_id
  from bokeh.util.tornado import _CallbackGroup
label_desc: Use image node_id 2 for calling a global function with example usage: run(loop) without return types